Ignore suite teardown GUI log out

Changes:
     - Added directive to ignore GUI log out errors in suite
       teardown to prevent whole test to fail.

Tested:
    - NA

Change-Id: Ib2d67800b5c59e5828e889af5d91932df47fd800
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/gui/gui_test/security_and_access_menu/test_user_management_sub_menu.robot b/gui/gui_test/security_and_access_menu/test_user_management_sub_menu.robot
index 1ddb4c8..a6c6163 100644
--- a/gui/gui_test/security_and_access_menu/test_user_management_sub_menu.robot
+++ b/gui/gui_test/security_and_access_menu/test_user_management_sub_menu.robot
@@ -216,6 +216,6 @@
 Suite Teardown Execution
     [Documentation]  Do suite teardown tasks.
 
-    Logout GUI
+    Run Keyword And Ignore Error  Logout GUI
     Close Browser
     Redfish.Logout